Nitride-based light emitting device
First Claim
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1. A nitride-based light emitting device comprising:
- a first-type GaN-based layer having a first conductivity;
a second-type GaN-based layer on the first-type GaN-based layer, the second-type GaN-based layer having a second conductivity; and
a light emitting layer arranged between the first-type GaN-based layer and the second-type GaN-base layer, the light emitting layer comprising at least one structure including;
a quantum well layer and a quantum barrier layer; and
a stress accommodating layer to accommodate stress arranged on at least one surface of the quantum well layer,wherein the structure comprises a repeated structure in an order of the quantum barrier layer, the stress accommodating layer, and the quantum well layer.
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Abstract
A nitride-based light emitting device capable of achieving an enhancement in light emission efficiency and an enhancement in reliability is disclosed. The nitride-based light emitting device includes a light emitting layer including a quantum well layer and a quantum barrier layer, and a stress accommodating layer arranged on at least one surface of the quantum well layer of the light emitting layer.
12 Citations
24 Claims
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1. A nitride-based light emitting device comprising:
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a first-type GaN-based layer having a first conductivity; a second-type GaN-based layer on the first-type GaN-based layer, the second-type GaN-based layer having a second conductivity; and a light emitting layer arranged between the first-type GaN-based layer and the second-type GaN-base layer, the light emitting layer comprising at least one structure including; a quantum well layer and a quantum barrier layer; and a stress accommodating layer to accommodate stress arranged on at least one surface of the quantum well layer, wherein the structure comprises a repeated structure in an order of the quantum barrier layer, the stress accommodating layer, and the quantum well layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 23)
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10. A nitride-based light emitting device comprising:
a light emitting layer comprising at least one quantum well structure comprising; a first quantum barrier layer; a stress accommodating layer arranged on the first quantum barrier layer; a second quantum barrier layer arranged on the stress accommodating layer; and a quantum well layer arranged on the second quantum barrier layer, wherein the stress accommodating layer has an energy band gap ranging between the energy band gaps of the first or second quantum barrier layer and the quantum well layer, wherein the energy band gaps of the first quantum barrier layer and the second quantum barrier layer are different, wherein the stress accommodating layer is arranged to accommodate stress applied to the quantum well layer, and wherein the quantum well structure comprises a repeated structure in an order of the first quantum barrier layer, the stress accommodating layer, the second quantum barrier layer, the quantum well layer, and the first quantum barrier layer. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 24)
Specification